[Fwd: [TheForge] Forging of Chrome plated steel]

Thu Mar 21 09:59:00 2002

Hold on Folks!
         We answered the question, but not the problem.  Isn't there several
ways to disassociate chrome plating from steel?  Acids or plating
techniques?

----- Original Message -----
From: "Larry" <[email protected]>
To: <[email protected]>
Sent: Thursday, March 21, 2002 6:51 AM
Subject: Re: [Fwd: [TheForge] Forging of Chrome plated steel]


> Thanks for all the inputs.  Considering I was just looking a a huge pile
of bumpers behind a friends body shop and as I was looking for some steel in
about that thickness to work into guards, the pile looked intriguing.  None
the less, I will reconsider and look at some more scrap yards for suitable
stock.  Thanks again,
>
> Larry
>
> Mike Sweany wrote:
>
> >  When I was suffering from the effects of the weld fume fever or what
ever you want to call it, and yes I had those syptoms. I was sent by my MD
to a specialist that gave me a colonoscopy, cat scan,  etc. The results of
all these tests were inconclusive. Yet I continued to worsen. Oh yes heavy
metal test too, but chrome is not heavy metal. Yes ,blood work too. SO. How
do you test for this?  I finally went to a lady that looks in your eye (I
forget the name of the practise)  She put me on vitamins and supplements,
told me to quit welding and probably saved my life.
> >   Phlip <[email protected]> wrote: OK, guys, this is Randy's response.
Randy is an MD in internal medicine in
> > NYC, and is also a teacher at one of the Med Schools there. He knows his
> > stuff ;-)
> >
> > Phlip
> >
> > Randy Goldberg MD wrote:
> >
> > > I don't have the resources to identify specific products of the
forging
> > > process. I can tell you that:
> > >
> > > Chromic oxide (CrO) is relatively insoluable and can be disregarded.
> > > Chromium trioxide (CrO3), however, is very soluable, can easily be
> > > absorbed through the lungs, and is very very very toxic. From
> > > Ellenhorn's _Medical Toxicology_: "Ingestion of hexavalent compounds
> > > (including chromium trioxide) usually leads to abdominal pains,
> > > vomiting, diarrhea, and intestinal bleeding. Death may ensue during
the
> > > initial circulatory collapse. If the patient survives the initial
phase,
> > > some renal tubular damage may occur. Hepatic failure, severe
> > > coagulopathy, or intravascular hemolysis have been observed." I would
> > > expect both CrO and CrO3 to be liberated during the forging of metals
> > > containing chromium.
> > >
> > > On zinc: Again from Ellenhorn: "Inhalation of zinc oxide is the most
> > > common cause of metal fume fever. This syndrome resembles a flulike
> > > illness. Onset occurs in 4 to 6 hours, generally on the evening after
> > > exposure to fumes. Fatigue, chills, fever, myalgias, cough, dyspnea,
> > > leukocytosis, thirst, metallic taste, and salivation characterize this
> > > self-limited illness, with resolution of symptoms appearing in 36
hours.
> > > The chest x-ray usually is clear. Tolerance develops in workers, but
may
> > > be lost over the weekend (``Monday Morning Fever''). Metal fume fever
> > > can also follow exposure to fumes of copper, magnesium, aluminum,
> > > antimony, iron, manganese, and nickel in welding, galvanizing, or
> > > smelting operations." Again, I would expect zinc oxide to be liberated
> > > during the forging of zinc-containing metals.
> > >
> > > I would not recommend playing with either of these without (a) a
> > > breathing mask, preferably one with an independant air supply and (b)
an
> > > EXCELLENT ventilation system.
> > >
> > > Cheers,
> > > Randy
> >
> > _
>
> _______________________________________________
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  [email protected]
> password:  anvil
> ___________
>
>
>